| 2014 | ICCE | Learning by Posing Problems Using Illustrations Instead of Words. | Takanobu Umetsu, Hikaru Eto, Tsukasa Hirashima, Akira Takeuchi |
| 2013 | ICCE | An Analysis and Detection of the Opportunities for Learning Activities within Automatically Generated Educational Games. | Takanobu Umetsu, Kenta Hamada, Tsukasa Hirashima, Akira Takeuchi |
| 2012 | ICCE | Design of Penalties against Useless Plays in Educational Games. | Takanobu Umetsu, Tomoka Baba, Tsukasa Hirashima, Akira Takeuchi |
| 2011 | ICCE | Ontological Approach to Support Authoring for Game -Based Learning Environment s. | Takanobu Umetsu, Takuya Azuma, Tsukasa Hirashima, Akira Takeuchi |
| 2010 | ICCE | Detection and Improvement of Low Efficient Learning Game Made by Automatic Generator. | Takanobu Umetsu, Tsukasa Hirashima, Akira Takeuchi |
| 2006 | ICCE | Property Exchange Method for Automatic Generation of Computer-Based Learning Games. | Takanobu Umetsu, Tsukasa Hirashima, Akira Takeuchi |
| 2005 | ICCE | Design Method for Learning Games Based on Key Structure and Behavior. | Takanobu Umetsu, Tsukasa Hirashima |
| 2002 | ICCE | Fusion Method for Designing Computer-Based Learning Game. | Takanobu Umetsu, Tsukasa Hirashima, Akira Takeuchi |